| Director | Harry Bromley Davenport |
|---|---|
| Budget | $60,000 |
| Box office | $1 million |
As Sam Phillips and his son Tony are playing outside their farm, Sam is suddenly abducted by a bright light. Three years later, the light returns and plants a seed in a forest. A half-human, half-alien creature develops from the seed, and is hit by a car; the couple in the car are soon killed. The creature then goes to a nearby cottage, where it assaults and impregnates a young woman before dissolving. Upon waking, her abdomen expands aggressively until she dies giving birth to a fully grown Sam. Sam washes himself, steals the driver's clothes and leaves in the car.
Sam seeks out Tony, who lives in an apartment building in London with his mother Rachel, her new American boyfriend Joe Daniels, and French au pair Analise Mercier. Tony has recurring nightmares where he wakes up soaked in another person's blood. Sam picks Tony up from school and is found by Rachel. Despite Joe's consternation Sam goes to live with the family, claiming that he cannot remember anything. After Tony sees Sam eating the eggs of his pet snake, Sam comforts him and drinks his blood. Tony soon discovers he has paranormal powers, which he uses to send a human-sized toy soldier to slaughter a neighbour who killed his snake and to bring a toy clown to life.
Sam and Rachel visit the farm where they used to live, leaving Tony in Analise's care. During a game of hide-and-seek with Tony, Analise is knocked out by the clown and used as a womb for the alien eggs. Tony sends a toy tank to attack her boyfriend Michael, who is killed by a panther as he tries to flee. Meanwhile, as Sam and Rachel make love at the farm, his skin starts to bleed and decompose. Joe takes Tony to the farm, where Sam takes his son up a hill towards the alien light. Sam, now taking the form of an alien, uses his scream to kill Joe. Sam and Tony enter the light and return to the alien world, leaving Rachel behind.
Rachel, now pregnant with Sam's second, alien child, goes home and finds the eggs have hatched into multiple clones of Tony. The clones then come to her and rub her pregnant belly, as Rachel smiles.
In an alternate ending, Rachel arrives home and finds an overturned refrigerator full of eggs. As she picks up one, Rachel is killed by a newborn creature.